diff --git a/CITATION.cff b/CITATION.cff
index 859379a..23d2f1b 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -1,7 +1,7 @@
 cff-version: 1.2.0
 title: emsarray
-version: 1.0.0a1
-date-released: 2025-12-15
+version: 1.0.0
+date-released: 2026-05-19
 type: software
 authors:
   - given-names: Tim
diff --git a/docs/releases/development.rst b/docs/releases/1.0.0.rst
similarity index 95%
rename from docs/releases/development.rst
rename to docs/releases/1.0.0.rst
index c94bc21..2bcf6ff 100644
--- a/docs/releases/development.rst
+++ b/docs/releases/1.0.0.rst
@@ -1,6 +1,8 @@
-=============================
-Next release (in development)
-=============================
+=====
+1.0.0
+=====
+
+Released on 2026-05-19
 
 * Add `sphinx-gallery <https://sphinx-gallery.github.io/>`_ to the docs
   to render the example gallery (:pr:`210`).
diff --git a/docs/releases/index.rst b/docs/releases/index.rst
index c80f06d..0c8303d 100644
--- a/docs/releases/index.rst
+++ b/docs/releases/index.rst
@@ -4,7 +4,7 @@ Release notes
 
 .. toctree::
 
-   development
+   1.0.0
    1.0.0a1
    0.10.0
    0.9.0
diff --git a/pyproject.toml b/pyproject.toml
index 75c82fa..69a23dd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "poetry.core.masonry.api"
 
 [project]
 name = "emsarray"
-version = "1.0.0a1"
+version = "1.0.0"
 description = "xarray extension that supports multiple geometry conventions"
 authors = [
 	{name = "Coastal Environmental Modelling team, Oceans and Atmosphere, CSIRO", email = "coasts@csiro.au"},
@@ -28,7 +28,7 @@ dynamic = ["readme"]
 
 [project.urls]
 Documentation = "https://emsarray.readthedocs.io/"
-"Release notes" = "https://emsarray.readthedocs.io/en/stable/releases/1.0.0a1/"
+"Release notes" = "https://emsarray.readthedocs.io/en/stable/releases/1.0.0/"
 Source = "https://github.com/csiro-coasts/emsarray/"
 
 [tool.poetry.dependencies]